WID-SEC-W-2026-2008
Vulnerability from csaf_certbund - Published: 2026-06-18 22:00 - Updated: 2026-11-05 23:00Summary
expat: Mehrere Schwachstellen
Severity
Mittel
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Expat ist ein XML Parser, der in der Programmiersprache-C geschrieben ist.
Angriff: Ein lokaler Angreifer kann mehrere Schwachstellen in expat ausnutzen, um einen Denial of Service Angriff durchzuführen oder potentiell Code auszuführen.
Betroffene Betriebssysteme: - Linux
- UNIX
Affected products
Known affected
15 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
RESF Rocky Linux
RESF
|
cpe:/o:resf:rocky_linux:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— | |
|
OpenBSD OpenBSD 7.8
OpenBSD / OpenBSD
|
cpe:/a:openbsd:openbsd:7.8
|
7.8 | |
|
Meinberg LANTIME <V7.10.013
Meinberg / LANTIME
|
<V7.10.013 | ||
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
IBM VIOS 4.1
IBM / VIOS
|
cpe:/a:ibm:vios:4.1
|
4.1 | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
IBM AIX 7.3
IBM / AIX
|
cpe:/o:ibm:aix:7.3
|
7.3 | |
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
OpenBSD OpenBSD 7.9
OpenBSD / OpenBSD
|
cpe:/a:openbsd:openbsd:7.9
|
7.9 | |
|
IBM QRadar SIEM
IBM
|
cpe:/a:ibm:qradar_siem:-
|
— | |
|
Open Source expat <2.8.2
Open Source / expat
|
<2.8.2 | ||
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— |
Affected products
Known affected
15 products, the same list as for
CVE-2026-56131
References
38 references
{
"document": {
"aggregate_severity": {
"text": "mittel"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Expat ist ein XML Parser, der in der Programmiersprache-C geschrieben ist.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann mehrere Schwachstellen in expat ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren oder potentiell Code auszuf\u00fchren.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux\n- UNIX",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2026-2008 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2008.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-2008 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2008"
},
{
"category": "external",
"summary": "NIST Vulnerability Database vom 2026-06-18",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56131"
},
{
"category": "external",
"summary": "NIST Vulnerability Database vom 2026-06-18",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56132"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:30647 vom 2026-06-28",
"url": "https://access.redhat.com/errata/RHSA-2026:30647"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2-2026-3495 vom 2026-07-08",
"url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3495.html"
},
{
"category": "external",
"summary": "IBM Security Bulletin 7280107 vom 2026-07-15",
"url": "https://www.ibm.com/support/pages/node/7280107"
},
{
"category": "external",
"summary": "Meinberg Security Advisory MBGSA-2026.05 vom 2026-07-21",
"url": "http://news.meinberg.de/680/"
},
{
"category": "external",
"summary": "OpenBSD 7.8 Errata vom 2026-08-22",
"url": "http://www.openbsd.org/errata78.html"
},
{
"category": "external",
"summary": "OpenBSD 7.9 Errata vom 2026-08-22",
"url": "https://www.openbsd.org/errata79.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2-2026-3880 vom 2026-09-01",
"url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3880.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2FIREFOX-2026-064 vom 2026-09-01",
"url": "https://alas.aws.amazon.com/AL2/ALAS2FIREFOX-2026-064.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-4765 vom 2026-08-31",
"url": "https://lists.debian.org/debian-lts-announce/2026/08/msg00057.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:64809 vom 2026-09-08",
"url": "https://access.redhat.com/errata/RHSA-2026:64809"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:64810 vom 2026-09-08",
"url": "https://access.redhat.com/errata/RHSA-2026:64810"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:64812 vom 2026-09-08",
"url": "https://access.redhat.com/errata/RHSA-2026:64812"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-64809 vom 2026-09-09",
"url": "https://linux.oracle.com/errata/ELSA-2026-64809-0.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-64810 vom 2026-09-08",
"url": "https://linux.oracle.com/errata/ELSA-2026-64810-0.html"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:64809 vom 2026-09-09",
"url": "https://errata.build.resf.org/RLSA-2026:64809"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:64810 vom 2026-09-09",
"url": "https://errata.build.resf.org/RLSA-2026:64810"
},
{
"category": "external",
"summary": "Rocky Linux Security Advisory RLSA-2026:64812 vom 2026-09-09",
"url": "https://errata.build.resf.org/RLSA-2026:64812"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-64812 vom 2026-09-09",
"url": "https://linux.oracle.com/errata/ELSA-2026-64812-0.html"
},
{
"category": "external",
"summary": "IBM Security Bulletin 7287454 vom 2026-09-15",
"url": "https://aix.software.ibm.com/aix/efixes/security/python_advisory21.asc"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-8813-1 vom 2026-09-24",
"url": "https://ubuntu.com/security/notices/USN-8813-1"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:23912-1 vom 2026-09-29",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029464.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:23894-1 vom 2026-09-29",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029443.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-74001 vom 2026-10-01",
"url": "https://linux.oracle.com/errata/ELSA-2026-74001.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4619-1 vom 2026-10-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029767.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4615-1 vom 2026-10-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029771.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4623-1 vom 2026-10-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029763.html"
},
{
"category": "external",
"summary": "IBM Security Bulletin 7292240 vom 2026-10-13",
"url": "https://www.ibm.com/support/pages/node/7292240"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4736-1 vom 2026-10-19",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029905.html"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:22139-1 vom 2026-10-21",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/POHQV7CK4FXXT3IJD54MKJGUNSFE66PA/"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4806-1 vom 2026-10-21",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029978.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-4849 vom 2026-10-22",
"url": "https://lists.debian.org/debian-lts-announce/2026/10/msg00043.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-88248 vom 2026-10-22",
"url": "https://linux.oracle.com/errata/ELSA-2026-88248.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:24323-1 vom 2026-10-26",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/030089.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:24554-1 vom 2026-11-06",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-November/030479.html"
}
],
"source_lang": "en-US",
"title": "expat: Mehrere Schwachstellen",
"tracking": {
"current_release_date": "2026-11-05T23:00:00.000+00:00",
"generator": {
"date": "2026-11-06T12:48:10.784+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.7.0"
}
},
"id": "WID-SEC-W-2026-2008",
"initial_release_date": "2026-06-18T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-06-18T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-06-28T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-07-07T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von Amazon aufgenommen"
},
{
"date": "2026-07-15T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von IBM aufgenommen"
},
{
"date": "2026-07-21T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Meinberg aufgenommen"
},
{
"date": "2026-08-23T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates aufgenommen"
},
{
"date": "2026-08-31T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von Amazon und Debian aufgenommen"
},
{
"date": "2026-09-07T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-09-08T22:00:00.000+00:00",
"number": "9",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-09-09T22:00:00.000+00:00",
"number": "10",
"summary": "Neue Updates von Rocky Enterprise Software Foundation und Oracle Linux aufgenommen"
},
{
"date": "2026-09-14T22:00:00.000+00:00",
"number": "11",
"summary": "Neue Updates von IBM aufgenommen"
},
{
"date": "2026-09-24T22:00:00.000+00:00",
"number": "12",
"summary": "Neue Updates von Ubuntu aufgenommen"
},
{
"date": "2026-09-29T22:00:00.000+00:00",
"number": "13",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-10-01T22:00:00.000+00:00",
"number": "14",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-10-12T22:00:00.000+00:00",
"number": "15",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-10-13T22:00:00.000+00:00",
"number": "16",
"summary": "Neue Updates von IBM aufgenommen"
},
{
"date": "2026-10-19T22:00:00.000+00:00",
"number": "17",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-10-21T22:00:00.000+00:00",
"number": "18",
"summary": "Neue Updates von openSUSE, SUSE und Debian aufgenommen"
},
{
"date": "2026-10-22T22:00:00.000+00:00",
"number": "19",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-10-25T23:00:00.000+00:00",
"number": "20",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-11-05T23:00:00.000+00:00",
"number": "21",
"summary": "Neue Updates von SUSE aufgenommen"
}
],
"status": "final",
"version": "21"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Amazon Linux 2",
"product": {
"name": "Amazon Linux 2",
"product_id": "398363",
"product_identification_helper": {
"cpe": "cpe:/o:amazon:linux_2:-"
}
}
}
],
"category": "vendor",
"name": "Amazon"
},
{
"branches": [
{
"category": "product_name",
"name": "Debian Linux",
"product": {
"name": "Debian Linux",
"product_id": "2951",
"product_identification_helper": {
"cpe": "cpe:/o:debian:debian_linux:-"
}
}
}
],
"category": "vendor",
"name": "Debian"
},
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "7.3",
"product": {
"name": "IBM AIX 7.3",
"product_id": "1139691",
"product_identification_helper": {
"cpe": "cpe:/o:ibm:aix:7.3"
}
}
}
],
"category": "product_name",
"name": "AIX"
},
{
"category": "product_name",
"name": "IBM QRadar SIEM",
"product": {
"name": "IBM QRadar SIEM",
"product_id": "T021415",
"product_identification_helper": {
"cpe": "cpe:/a:ibm:qradar_siem:-"
}
}
},
{
"branches": [
{
"category": "product_version",
"name": "4.1",
"product": {
"name": "IBM VIOS 4.1",
"product_id": "1522854",
"product_identification_helper": {
"cpe": "cpe:/a:ibm:vios:4.1"
}
}
}
],
"category": "product_name",
"name": "VIOS"
}
],
"category": "vendor",
"name": "IBM"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003cV7.10.013",
"product": {
"name": "Meinberg LANTIME \u003cV7.10.013",
"product_id": "T056848"
}
},
{
"category": "product_version",
"name": "V7.10.013",
"product": {
"name": "Meinberg LANTIME V7.10.013",
"product_id": "T056848-fixed",
"product_identification_helper": {
"cpe": "cpe:/h:meinberg:lantime:v7.10.013"
}
}
}
],
"category": "product_name",
"name": "LANTIME"
}
],
"category": "vendor",
"name": "Meinberg"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c2.8.2",
"product": {
"name": "Open Source expat \u003c2.8.2",
"product_id": "T055629"
}
},
{
"category": "product_version",
"name": "2.8.2",
"product": {
"name": "Open Source expat 2.8.2",
"product_id": "T055629-fixed",
"product_identification_helper": {
"cpe": "cpe:/a:expat:expat:2.8.2"
}
}
}
],
"category": "product_name",
"name": "expat"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "7.8",
"product": {
"name": "OpenBSD OpenBSD 7.8",
"product_id": "T053173",
"product_identification_helper": {
"cpe": "cpe:/a:openbsd:openbsd:7.8"
}
}
},
{
"category": "product_version",
"name": "7.9",
"product": {
"name": "OpenBSD OpenBSD 7.9",
"product_id": "T058490",
"product_identification_helper": {
"cpe": "cpe:/a:openbsd:openbsd:7.9"
}
}
}
],
"category": "product_name",
"name": "OpenBSD"
}
],
"category": "vendor",
"name": "OpenBSD"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T056236",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
}
}
}
],
"category": "vendor",
"name": "Oracle"
},
{
"branches": [
{
"category": "product_name",
"name": "RESF Rocky Linux",
"product": {
"name": "RESF Rocky Linux",
"product_id": "T054581",
"product_identification_helper": {
"cpe": "cpe:/o:resf:rocky_linux:-"
}
}
}
],
"category": "vendor",
"name": "RESF"
},
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux",
"product": {
"name": "Red Hat Enterprise Linux",
"product_id": "67646",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux:-"
}
}
}
],
"category": "vendor",
"name": "Red Hat"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE Linux",
"product": {
"name": "SUSE Linux",
"product_id": "T054646",
"product_identification_helper": {
"cpe": "cpe:/o:suse:suse_linux:-"
}
}
},
{
"category": "product_name",
"name": "SUSE openSUSE",
"product": {
"name": "SUSE openSUSE",
"product_id": "T055946",
"product_identification_helper": {
"cpe": "cpe:/o:suse:opensuse:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
},
{
"branches": [
{
"category": "product_name",
"name": "Ubuntu Linux",
"product": {
"name": "Ubuntu Linux",
"product_id": "T055947",
"product_identification_helper": {
"cpe": "cpe:/o:canonical:ubuntu_linux:-"
}
}
}
],
"category": "vendor",
"name": "Ubuntu"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-56131",
"product_status": {
"known_affected": [
"T056236",
"T054581",
"67646",
"T053173",
"T056848",
"T055946",
"1522854",
"T054646",
"1139691",
"2951",
"T058490",
"T021415",
"T055629",
"T055947",
"398363"
]
},
"release_date": "2026-06-18T22:00:00.000+00:00",
"title": "CVE-2026-56131"
},
{
"cve": "CVE-2026-56132",
"product_status": {
"known_affected": [
"T056236",
"T054581",
"67646",
"T053173",
"T056848",
"T055946",
"1522854",
"T054646",
"1139691",
"2951",
"T058490",
"T021415",
"T055629",
"T055947",
"398363"
]
},
"release_date": "2026-06-18T22:00:00.000+00:00",
"title": "CVE-2026-56132"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.